The most likely author of Titus 2:11-12 is the apostle Paul. Paul is considered to be the author by the majority of evangelical scholars and theologians based on the traditional attributions in the New Testament, as well as the consistent style and theology found in the writings attributed to him.

From an evangelical Christian perspective, Paul is highly regarded as a major figure in the early church and is credited with writing many of the New Testament letters. He was a zealous persecutor of Christians before his conversion, and later became a passionate advocate for the message of Jesus Christ.

In Titus 2:11-12, Paul emphasizes the transformative power of the gospel by stating that “the grace of God has appeared, bringing salvation for all people, training us to renounce ungodliness and worldly passions, and to live self-controlled, upright, and godly lives in the present age” (ESV). This reflects the evangelical belief in the central importance of God’s grace in salvation, as well as the ongoing process of sanctification and transformation in the lives of believers.

Overall, evangelical Christians view Paul as an influential and authoritative apostle, and his writings, including Titus 2:11-12, are seen as divinely inspired and authoritative for faith and practice.